Improvement in revolving hay-rakes



E. CALDERWOOD.

Revolving Hay Rake.

Patentd Feb; "21, 1865.

UNITED STATES PATENT OFFICE.

EZRA. OALDERWOOD, OF PORTLAND, MAINE.

IMPROVEMENT IN REVOLVING HAY-RAKE S.

Specification forming part of Letters Patent No. 46,417, dated February21,1865.

To all whom it may concern): I

Be it' known that I, EZRA CALDERWOOD, of Portland, in the county ofCumberland and State of Maine, have invented a new and Im 3 provedRevolving Hand and Horse Rake; and

tion; Fig. 2, a side sectional view of the same taken in the line 00 m,Fig. 1.

Similar letters ,of reference indicate like parts.

This invention relate to a new and improved revolving rake to be drawneither manually or by a horse; and it consists in a novel and simplemeans employed for holding the rake in working position, and which willadmit of being readily actuated to liberate the rake, so

that it may revolve and discharge its load,

when necessary. 4

A A represent two thills, connected at their outer ends by a cross-bar,a, and connected near their inner ends by a cross-bar, b, as shownclearly in Fig. 1. One of these thills, A, is connected to the rake-headB by a metal strap or eye, 0, the former being allowed to. turn freelyin the latter. The-other thill, A, has a box, D, "attached to its innerend, said box being constructed of two parts, 0 0, one of which, 0, ispermanently attachedto the thill, and the other, 0, secured to c byasliding collar or band, E. By this means the part 0 may be readilyattached to and detached from c. This box D is composed of a cylindricalpart and a shank, the parts 0 0 being longitudinal halves of the same,and the collar or band E fitted on the shank. (See Fig. 2.)

On the rake-head B there is permanently secured or keyed a wheel, F,which is fitted within the box D, the latter forming a bearing for therake-head, like the strap or eye 0 of the thill A. This wheel F has itsperiphery at two opposite sides provided with recesses d d, which formeccentric surfaces and leave a shoulder,e, at each end of the same, asshown in Fig. 2. These recesses adjoining the shoulders c are notched,as shown at f, said notches extending radially into the wheel, as alsoshown in Fig. 2.

Within the shank of thebox D there is placed a slide, G, which has aspiral spring, g, around it, and this spring has a tendency to keep theouter end of the slide G pressed toward or against the periphery of thewheel F. The inner end of the slide G has arod, H, attached to it, whichrod passes through the thill A, extending its whole length, and isconnected at its outer end to alever, I, 011 the front crossbar, a, ofthe thills. (See Fig. 1.)

that the rake will, as it is drawn along, beheld in proper position toperform its work in consequence of the slide G being in one of thenotches f of the wheel F, the shoulder 6 forming a good bearing-surfaceon the slide; and it will further be seen that when the rake hasgathered up a sufficient load the latter may be readily discharged bysimply actuating the le ver I, so as to draw the slide G outward andfree from the wheel F, the rake then making a half-revolution inconsequence of the front ends of the teeth 9 catching against theground, the rake being retained or held when it completes ahalf-revolution in consequence of -the shoulder e, which previously wasat the rear side of the rake-head, coming in contact with the slide Gand the latter entering the notch I f adjoining said shoulder. Thus bythis simple arrangement, which may be manipulated with the greatestfacility, the rake may at the will of the driver or operator be made torevolve or make a half revolution in order to discharge its load, and atthe same time be held securely in proper position while performing itswork.

While disclaiming the use of the notched or recessed wheel andspring-bolt with arevolving rake, I claim as new and desire to secure byLetters Patent- I I The combination, with the thill A, of the box D,movable cap 0, andspring-bolt G, the

latter engaging with the notched or recessed wheel E upon the rake-head,all as herein de scribed.

, EZRA OALDERWOOD. \Vitnesses:

S. L. OARLETON, JOHN S. KIMBALL.

From the above description it will be seen

